Might have to look into getting these…altho I noticed volume 4 on Amazon is going for over $200…did they just make that limited or something? Geez!

More than likely volumes 1-3 have had further printings that volume 4 has yet to receive. Each successive volume will always drop a % of sales so comic publishers try there best to estimate that and print to an assumed demand based of previous sales drops…. But since it's become apparant that these IDW HC collections have become an ongoing thing not just a line collecting the furman early years, fans who may have given them a pass initially have come chasing the lot….. Demand enough to reprint the first 3 but not yet the 4th. IDW also have one of the worst track records for low print runs which always ramps up the secondary market price until they get more printed.